| 3750 series breakdown Mulling about getting a 3750-series switch, if the price is right. Going alittle nuts trying to keep track of
the various makes / models out there. To help myself keep track, drew out this little product matrix... correct
me if I'm wrong on anything
3750 -- original make of 3750, EOL (or at least not readily available via retail / reseller channels), 10/100 ports
3750G -- 10/100/1000 ports
3750E -- 'improved' 3750, though about the only 'improved' part I can find is it's got alot more smarts when it comes to
failing off an RPS than the non-E models of 3750.
3750X -- latest iteration of 3750, all 10/100/1000 ports, higher POE ratings
- all models can stack via stackcable
- all series break down between SMI and EMI (or whatever Cisco's calling the images these days), but I'm not sure
if the 3750 (any) uses the old style of upgrading between SMI to EMI (ie. load EMI and reboot) or needs 'software
activation'
- 32F / 128D IIRC, except the X which claim 64F / 256D
- PowerPC CPU, but again no datasheet on the specs of the CPU
- Found no data(sheets) on the packet buffer size on the 3750
Am I missing anything else?
Regards |
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 Nubiatechsoy capitan
join:2007-09-02
Chicago, IL | Both X and E models have 64F/256D.
Not sure what you mean by the buffer size.
All of the 3750's have the same TCAM limitations, and the same sdm templates, iirc. The 48 port models have 12 ASICs (4 ports per ASIC).
--
ןןɐʍ ɹǝpuoʎ uo ʞooן
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 tubbynetreminds me of the danse russePremium,MVM
join:2008-01-16
Chandler, AZ
kudos:1 | reply to HELLFIRE
said by HELLFIRE:3750E -- 'improved' 3750, though about the only 'improved' part I can find is it's got alot more smarts when it comes to
failing off an RPS than the non-E models of 3750.
3750X -- latest iteration of 3750, all 10/100/1000 ports, higher POE ratings
3750e/x support 10gbe. -e uses x2 modules (and can be stepped to 1gbe via twingig converters) while -x uses a separate network module (nm) or service module (sm -- used if you want netflow, etc). nm can be 1gbe or 10gbe. 10gbe uses sfp+ and can support 1gbe if sfp are inserted.
-e have only single power supply, requiring use of rps-2300 if redundant power is required. -x have dual power supply option, plus the addition of stackpower (which is included in lan-base license now, i believe). its gimmicky -- but if you're doing large stacked rings, it works well.
both are 10/100/1000 with poe.
- all models can stack via stackcable
as noted above, -x support stackpower, either from an xps (rps on steroids) or by creating a separate power-ring.
- all series break down between SMI and EMI (or whatever Cisco's calling the images these days), but I'm not sure
if the 3750 (any) uses the old style of upgrading between SMI to EMI (ie. load EMI and reboot) or needs 'software
activation'
- PowerPC CPU, but again no datasheet on the specs of the CPU
- Found no data(sheets) on the packet buffer size on the 3750
fwiw -- many people have been trying to find the depth -- with no luck (tea leaves say its crappier than cisco wants to admit).
q.
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"...if I in my north room dance naked, grotesquely before my mirror waving my shirt round my head and singing softly to myself..." |
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sk1939Premium
join:2010-10-23
Washington, DC
kudos:9 | I've always been curious as to how the 3750E compares to the 3560E. |
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tubbynetreminds me of the danse russePremium,MVM
join:2008-01-16
Chandler, AZ
kudos:1 | said by sk1939:I've always been curious as to how the 3750E compares to the 3560E.
addition of stackwise.
its the same switch at the core. 3750 is just targeted at "enterprise" due to the single control-plane nonsense.
q.
--
"...if I in my north room dance naked, grotesquely before my mirror waving my shirt round my head and singing softly to myself..." |
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| reply to HELLFIRE
3750X can be used as a distro switch. It has a redundant hot swap PS as well as Power Stack. The performance of the 3750-X is as good as the old 4500. |
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| reply to HELLFIRE
@sk1939
From what I can tell, 3750 has full PVLAN support (isolated, community), the 3560 does not.
@Da Geek Kid
Got any numbers we could look at backing that up? Or this just from some setups you've done before?
Thanks for the comments all. Leaning heavily towards the 3750G model as it can be had for around 800USD,
based on the searches I've done so far. Also looks like you're right tubbynet that E and X use software
activation. IIRC, and correct me if I'm wrong, SMI / EMI switches still just need EMI code loaded,
a reload, and they're off to the races.
Also side observation, but nearly all the xx60 switches do stackwise. So what the heck and what's the point?
Regards |
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| »www.cisco.com/en/US/prod/switche···0955.pdf
the xx60 = 2960S only which supports FlexStack != Stackwise... FlexStack is not as reliable as Stackwise.
If you are looking for pvlan you would need 3750ME switch |
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| reply to HELLFIRE
Thanks for the datasheet Da Geek Kid, got some more light reading to do 
Here -- looks like it's actually the 3560, 3750 and 3750ME that support Isolated, PVLAN and Community PVLAN configs.
Regards |
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| also, a 4507 has 7 modules 2 for SUP 5 for other. 7 3750 stack have 7 SUP... Anyone can act as a SUP which makes a 3750 more redundant. specially 3750-X with PowerStack.
A 3750ME's interfaces function differently than a normal 3750, but ok. |
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sk1939Premium
join:2010-10-23
Washington, DC
kudos:9 | Another sticking point; what's the difference between the 3750G 24 port versions (one is 1.25 RU high, the other is 1 RU) and the 3750 and 3750v2. |
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| I believe you are refering to the 3750 with the WLC built-in which is a bit larger. Also, the 3750v2 has only a 32Gbps switch fabric as opposed to 160Gbps for E and X. The StackWise for E and X are @ 64Gbps as opposed to 32 for V2... |
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sk1939Premium
join:2010-10-23
Washington, DC
kudos:9 Reviews:
 ·T-Mobile US
| I knew that much, but how does it it compare to the original 3750 (v1 vs v2)?
I don't believe so, they look like this (top vs bottom).
 |
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| it looks like the old model with POE. The one with WLC is:
»www.cisco.com/en/US/prod/collate···879.html
Obviously, the V2 is newer, may have faster chip running 15.0 code only... |
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| reply to HELLFIRE
Have to look around Cisco if they have a full datasheet again for the 3750s. One I found heredidn't include the v2s
as far as I can tell.
By the way, anyone able to comment on this?
said by HELLFIRE:IIRC, and correct me if I'm wrong, SMI / EMI switches still just need EMI code loaded,
a reload, and they're off to the races. Regards |
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| The doc I included above includes V2.
EMI/SMI was a code upload. Originally the SMI could not be loaded with the SSH version which caused the SMI switch to be bricked and you had to use YMODEM to push the SMI code to it. Cisco fixed that by changing their code. Now all the SMI and EMI will work with new codes. Not sure about version 15 though... |
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| reply to HELLFIRE
Thanks for the warning Da Geek Kid. Will continue to knock around and see what the deals are for 3750(any) is.
Will keep everyone posted!
Regards |
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sk1939Premium
join:2010-10-23
Washington, DC
kudos:9 | 3750 10/100 PoE can be had for $350-$400. |
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| reply to HELLFIRE
Just thought I'd update, got a 3750G-24T-S (1U, no SFPs) for about $800USD w/o shipping. Other than getting a few minutes to power it up and confirm all the status LEDs are green, haven't had much time to do anything else.
HOPEFULLY this weekend is quiet enough to test it out some more and attempt a code upgrade to IPSERVICES.
Thanks again for everyone's comments!
Regards |
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sk1939Premium
join:2010-10-23
Washington, DC
kudos:9 | It should upgrade without issue. I thought about buying a 3750G, but I bought an SRX210 instead. Did you buy new or used? |
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